2589640

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{641}}^1$

素因数の和:753

約数の個数: 32

約数和(自身を含む): 5893560

約数和(自身を除く): 3303920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 641, 808, 1010, 1282, 2020, 2564, 3205, 4040, 5128, 6410, 12820, 25640, 64741, 129482, 258964, 323705, 517928, 647410, 1294820, 2589640]

約数ペア:

[(1, 2589640), (2, 1294820), (4, 647410), (5, 517928), (8, 323705), (10, 258964), (20, 129482), (40, 64741), (101, 25640), (202, 12820), (404, 6410), (505, 5128), (641, 4040), (808, 3205), (1010, 2564), (1282, 2020)]